Question

Given M(-1,3) as the midpoint of line AB. A has coordinates ( -3,2), what are the coordinates of B?

Answer 1

Since the x coordinate of the midpoint is two right of A, the x coordinate of B must be 2 to the right of the midpoint or 1.

Answer 2

Similarly, the y coordinate of the midpoint is +1 from A so the y coordinate of B just be +1 from the y coordinate of the midpoint or 4. So B is the point (1,4)